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Novosadov [1.4K]
4 years ago
14

A car is driven on a straight track such that its displacement from the starting point is given as x = t + 2t2. What is the aver

age velocity (average rate of change of displacement) of the car between t = 2s and t = 4s?
Mathematics
1 answer:
romanna [79]4 years ago
7 0
Average rate of change = (x(4) - x(2))/(4 - 2) = ((4 + 2(4)^2) - (2 + 2(2)^2))/2 = ((4 + 2(16)) - (2 + 2(4)))/2 = ((4 + 32) - (2 + 8))/2 = (36 - 10)/2 = 26/2 = 13.

Therefore, average velocity is 13 m/s
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Answer:

X-4, Y-5

Step-by-step explanation:

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6 0
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The manager at Gabriel's Furniture Store is trying to figure out how much to charge for a bookshelf that just arrived. The books
melomori [17]

First: markup rate × wholesale price = amount of markup

Second: Well the markup rate is a percentage, you have to convert it into a decimal. Percent means "out of one hundred," so <span>80%</span> is equivalent to <span>80/100 </span>which is also equal to <span>80÷100</span>.

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The retail price of the chair should be <span>$167.40</span>.

7 0
4 years ago
A cube with a side of 1m was sawn into cubes with a side of 1 cm and then laid in a row (in a straight line). What was the lengt
MrRissso [65]

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Step-by-step explanation:

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-10 pounds or 10 pounds loss

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